Computer Networking
Modulation is the process of

converting digital signals to analog signals
converting analog signals to digital signals
performing data encryption.
Multiplexing various signals into high speed line signals

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Computer Networking
When a new trunk link is configured on an IOS-based switch, which VLANs are allowed over the link?

Only configured VLAN's are allowed on the link.
No VLAN's are allowed, you must configure each VLAN by hand.
Only extended VLAN's are allowed by default.
By default, all VLANs are allowed on the trunk.

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